package com.changgou.goods.dao;

import com.changgou.goods.pojo.Brand;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import tk.mybatis.mapper.common.Mapper;

import java.util.List;
import java.util.Map;


@Repository
public interface BrandMapper extends Mapper<Brand> {

    /**
     * 根据商品分类名称查询品牌列表实现
     * @param categoryName 分类名称
     * @return
     */
    @Select("select name,image from tb_brand where id in (" +
            "select brand_id from tb_category_brand where category_id in(" +
            "select id from tb_category where name=#{categoryName}" +
            ")" +
            ") ORDER BY seq")
    public List<Map> findBrandListByCategoryName(@Param("categoryName")String categoryName);
}
